Goat Story's 16 oz horn mug is designed to bring a little Viking to your morning cup, with a spillproof lid and a cross-body carry-strap that converts to a stand to allow you to balance your horn of plenty on your desk between swigs.
It began life as a successful Kickstarter project, and also comes in white/brown strap.
GOAT STORY Mug, Real leather, 16 oz, Black
(via Made on Kickstarter)